Optical imaging lens

ABSTRACT

The present invention provides an optical imaging lens. The optical imaging lens comprises seven lens elements positioned in an order from an object side to an image side. Through controlling convex or concave shape of surfaces of the lens elements and parameters to meet (EFL+ALT)/D67≤4.800, the optical imaging lens may shorten system length with a good imaging quality.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to P.R.C. Patent Application No.201911113480.1 titled “Optical Imaging Lens,” filed Nov. 14, 2019, withthe State Intellectual Property Office of the People's Republic of China(SIPO).

TECHNICAL FIELD

The present disclosure relates to optical imaging lenses, andparticularly, optical imaging lenses having, in some embodiments, sevenlens elements.

BACKGROUND

As the specifications of optical imaging lenses rapidly evolve, variousfactors, such as slim and thin in sizes, aberration adjustment aretaking into consideration to the greater extent. Adding more lenses inan optical imaging lens will increase the distance from an object-sideof the first lens element to an image plane along an optical axis, andusually comes out with a bulky mobile phone or digital camera.Therefore, size reduction and achieving good imaging quality are two ofthe aspects in designing the optical imaging lens. Further, smallf-number facilitates light flux and great field of view is graduallybecoming a trend in the market. Accordingly, achieving slim and thin insizes for a short system length in view of the various relevantconsiderations of small f-number and great field of view may be achallenge in the industry.

SUMMARY

The present disclosure provides for optical imaging lenses showing goodimaging quality and being capable to provide a shortened system length,a reduced f-number and/or an enlarged field of view.

In an example embodiment, an optical imaging lens may comprise sevenlens elements, hereinafter referred to as first, second, third, fourth,fifth, sixth and seventh lens elements and positioned sequentially froman object side to an image side along an optical axis. Each of thefirst, second, third, fourth, fifth, sixth and seventh lens elements mayalso have an object-side surface facing toward the object side andallowing imaging rays to pass through. Each of the first, second, third,fourth, fifth, sixth and seventh lens elements may also have animage-side surface facing toward the image side and allowing the imagingrays to pass through.

In the specification, parameters used here are defined as follows: athickness of the first lens element along the optical axis isrepresented by T1, a distance from the image-side surface of the firstlens element to the object-side surface of the second lens element alongthe optical axis is represented by G12, a thickness of the second lenselement along the optical axis is represented by T2, a distance from theimage-side surface of the second lens element to the object-side surfaceof the third lens element along the optical axis is represented by G23,a thickness of the third lens element along the optical axis isrepresented by T3, a distance from the image-side surface of the thirdlens element to the object-side surface of the fourth lens element alongthe optical axis is represented by G34, a thickness of the fourth lenselement along the optical axis is represented by T4, a distance from theimage-side surface of the fourth lens element to the object-side surfaceof the fifth lens element along the optical axis is represented by G45,a thickness of the fifth lens element along the optical axis isrepresented by T5, a distance from the image-side surface of the fifthlens element to the object-side surface of the sixth lens element alongthe optical axis is represented by G56, a thickness of the sixth lenselement along the optical axis is represented by T6, a distance from theimage-side surface of the sixth lens element to the object-side surfaceof the seventh lens element along the optical axis is represented byG67, a thickness of the seventh lens element along the optical axis isrepresented by T7, a distance from the seventh lens element to afiltering unit along the optical axis is represented by G7F, a thicknessof the filtering unit along the optical axis is represented by TTF, adistance from the filtering unit to an image plane along the opticalaxis is represented by GFP, a focal length of the first lens element isrepresented by f1, a focal length of the second lens element isrepresented by f2, a focal length of the third lens element isrepresented by f3, a focal length of the fourth lens element isrepresented by f4, a focal length of the fifth lens element isrepresented by f5, a focal length of the sixth lens element isrepresented by f6, a focal length of the seventh lens element isrepresented by f7, a refractive index of the first lens element isrepresented by n1, a refractive index of the second lens element isrepresented by n2, a refractive index of the third lens element isrepresented by n3, a refractive index of the fourth lens element isrepresented by n4, a refractive index of the fifth lens element isrepresented by n5, a refractive index of the sixth lens element isrepresented by n6, a refractive index of the seventh lens element isrepresented by n7, an abbe number of the first lens element isrepresented by V1, an abbe number of the second lens element isrepresented by V2, an abbe number of the third lens element isrepresented by V3, an abbe number of the fourth lens element isrepresented by V4, an abbe number of the fifth lens element isrepresented by V5, an abbe number of the sixth lens element isrepresented by V6, an abbe number of the seventh lens element isrepresented by V7, an effective focal length of the optical imaging lensis represented by EFL, a distance from the object-side surface of thefirst lens element to the image-side surface of the seventh lens elementalong the optical axis is represented by TL, a distance from theobject-side surface of the first lens element to the image plane alongthe optical axis, i.e. a system length is represented by TTL, a sum ofthe thicknesses of all seven lens elements along the optical axis, i.e.a sum of T1, T2, T3, T4, T5, T6 and T7 is represented by ALT, a sum ofsix air gaps from the first lens element to the seventh lens elementalong the optical axis, which is also defined as a sum of a distancefrom the image-side surface of the first lens element to the object-sidesurface of the second lens element along the optical axis, a distancefrom the image-side surface of the second lens element to theobject-side surface of the third lens element along the optical axis, adistance from the image-side surface of the third lens element to theobject-side surface of the fourth lens element along the optical axis, adistance from the image-side surface of the fourth lens element to theobject-side surface of the fifth lens element along the optical axis, adistance from the image-side surface of the fifth lens element to theobject-side surface of the sixth lens element along the optical axis anda distance from the image-side surface of the sixth lens element to theobject-side surface of the seventh lens element along the optical axis,i.e. a sum of G12, G23, G34, G45, G56 and G67 is represented by AAG, aback focal length of the optical imaging lens, which is defined as thedistance from the image-side surface of the seventh lens element to theimage plane along the optical axis, i.e. a sum of G7F, TTF and GFP isrepresented by BFL, a half field of view of the optical imaging lens isrepresented by HFOV, an image height of the optical imaging lens isrepresented by ImgH, a f-number of the optical imaging lens isrepresented by Fno, and a distance from the object-side surface of thesixth lens element to the image-side surface of the seventh lens elementalong the optical axis is represented by D67.

In an aspect of the present disclosure, in the optical imaging lens, thefirst lens element has positive refracting power, the third lens elementhas positive refracting power and a periphery region of the object-sidesurface of the third lens element is convex, an optical axis region ofthe image-side surface of the fourth lens element is convex, an opticalaxis region of the object-side surface of the sixth lens element isconcave, an optical axis region of the object-side surface of theseventh lens element is concave, lens elements having refracting powerof the optical imaging lens consist of the seven lens elements describedabove, and the optical imaging lens satisfies the inequalities:

(EFL+ALT)/D67 4.800 Inequality   (1)

In another aspect of the present disclosure, in the optical imaginglens, the third lens element has positive refracting power and aperiphery region of the object-side surface of the third lens element isconvex, a periphery region of the object-side surface of the fourth lenselement is concave and an optical axis region of the image-side surfaceof the fourth lens element is convex, an optical axis region of theobject-side surface of the sixth lens element is concave, an opticalaxis region of the object-side surface of the seventh lens element isconcave, lens elements having refracting power of the optical imaginglens consist of the seven lens elements described above, and the opticalimaging lens satisfies Inequality (1).

In another example embodiment, other inequality(s), such as thoserelating to the ratio among parameters could be taken intoconsideration. For example:

(T5+G56+T6)/T1≤2.500   Inequality (2);

EFL/(T1+G12+T2)≥4.500   Inequality (3);

(T3+AAG)/T4≥5.500   Inequality (4);

(T3+T4)/T6≤1.800   Inequality (5);

AAG/(G12+G23+G34)≥2.800   Inequality (6);

(T1+T5)/G34≤3.800   Inequality (7);

(G12+T6)/(G23+G45)≤2.500   Inequality (8);

(T3+T4+AAG)/BFL≤4.800   Inequality (9);

(EFL+T5)/AAG≥1.800   Inequality (10);

(T4+G45+T5)/T2≤5.000   Inequality (11);

TTL/(T1+T5+T6+T7)≤3.800   Inequality (12);

ALT/(T1+G45)≤4.100   Inequality (13);

(G34+T6)/(G12+T5)≥2.500   Inequality (14);

TL/(G34+T4+G45+G56)≤5.000   Inequality (15);

(T2+T7)/G45≤5.000   Inequality (16);

EFL/BFL≥4.500   Inequality (17);

T6/(G12+T5)≥1.500   Inequality (18);

and/or

AAG/(T1+T2)≤4.000   Inequality (19).

In some example embodiments, more details about the convex or concavesurface structure, refracting power or chosen material etc. could beincorporated for one specific lens element or broadly for a plurality oflens elements to improve the control for the system performance and/orresolution. It is noted that the details listed herein could beincorporated in example embodiments if no inconsistency occurs.

The above example embodiments are not limiting and could be selectivelyincorporated in other embodiments described herein.

The optical imaging lens in example embodiments may achieve good imagingquality, such as good optical characteristics of lower distortionaberration, effectively shorten the system length and promote thethermal stability.

BRIEF DESCRIPTION OF THE DRAWINGS

Example embodiments will be more readily understood from the followingdetailed description when read in conjunction with the appended drawing,in which:

FIG. 1 depicts a cross-sectional view of one single lens elementaccording to the present disclosure;

FIG. 2 depicts a cross-sectional view showing the relation between theshape of a portion and the position where a collimated ray meets theoptical axis;

FIG. 3 depicts a cross-sectional view showing a first example ofdetermining the shape of lens element regions and the boundaries ofregions;

FIG. 4 depicts a cross-sectional view showing a second example ofdetermining the shape of lens element regions and the boundaries ofregions;

FIG. 5 depicts a cross-sectional view showing a third example ofdetermining the shape of lens element regions and the boundaries ofregions;

FIG. 6 depicts a cross-sectional view of a first embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 7 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a first embodiment of the opticalimaging lens according to the present disclosure;

FIG. 8 depicts a table of optical data for each lens element of a firstembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 9 depicts a table of aspherical data of a first embodiment of theoptical imaging lens according to the present disclosure;

FIG. 10 depicts a cross-sectional view of a second embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 11 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a second embodiment of the opticalimaging lens according to the present disclosure;

FIG. 12 depicts a table of optical data for each lens element of theoptical imaging lens of a second embodiment of the present disclosure;

FIG. 13 depicts a table of aspherical data of a second embodiment of theoptical imaging lens according to the present disclosure;

FIG. 14 depicts a cross-sectional view of a third embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 15 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a third embodiment of the opticalimaging lens according to the present disclosure;

FIG. 16 depicts a table of optical data for each lens element of theoptical imaging lens of a third embodiment of the present disclosure;

FIG. 17 depicts a table of aspherical data of a third embodiment of theoptical imaging lens according to the present disclosure;

FIG. 18 depicts a cross-sectional view of a fourth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 19 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a fourth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 20 depicts a table of optical data for each lens element of theoptical imaging lens of a fourth embodiment of the present disclosure;

FIG. 21 depicts a table of aspherical data of a fourth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 22 depicts a cross-sectional view of a fifth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 23 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a fifth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 24 depicts a table of optical data for each lens element of theoptical imaging lens of a fifth embodiment of the present disclosure;

FIG. 25 depicts a table of aspherical data of a fifth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 26 depicts a cross-sectional view of a sixth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 27 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a sixth embodiment of the opticalimaging lens according the present disclosure;

FIG. 28 depicts a table of optical data for each lens element of theoptical imaging lens of a sixth embodiment of the present disclosure;

FIG. 29 depicts a table of aspherical data of a sixth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 30 depicts a cross-sectional view of a seventh embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 31 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a seventh embodiment of the opticalimaging lens according to the present disclosure;

FIG. 32 depicts a table of optical data for each lens element of aseventh embodiment of an optical imaging lens according to the presentdisclosure;

FIG. 33 depicts a table of aspherical data of a seventh embodiment ofthe optical imaging lens according to the present disclosure;

FIG. 34 depicts a cross-sectional view of an eighth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 35 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of an eighth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 36 depicts a table of optical data for each lens element of aneighth embodiment of an optical imaging lens according to the presentdisclosure;

FIG. 37 depicts a table of aspherical data of an eighth embodiment ofthe optical imaging lens according to the present disclosure;

FIG. 38 depicts a cross-sectional view of a ninth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 39 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a ninth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 40 depicts a table of optical data for each lens element of a ninthembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 41 depicts a table of aspherical data of a ninth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 42 depicts a cross-sectional view of a tenth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 43 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a tenth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 44 depicts a table of optical data for each lens element of a tenthembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 45 depicts a table of aspherical data of a tenth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 46 depicts a cross-sectional view of an eleventh embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 47 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of an eleventh embodiment of the opticalimaging lens according to the present disclosure;

FIG. 48 depicts a table of optical data for each lens element of aneleventh embodiment of an optical imaging lens according to the presentdisclosure;

FIG. 49 depicts a table of aspherical data of an eleventh embodiment ofthe optical imaging lens according to the present disclosure;

FIG. 50 depicts a cross-sectional view of a twelfth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 51 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a twelfth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 52 depicts a table of optical data for each lens element of atwelfth embodiment of an optical imaging lens according to the presentdisclosure;

FIG. 53 depicts a table of aspherical data of a twelfth embodiment ofthe optical imaging lens according to the present disclosure;

FIG. 54 depicts a cross-sectional view of a thirteenth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 55 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a thirteenth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 56 depicts a table of optical data for each lens element of athirteenth embodiment of an optical imaging lens according to thepresent disclosure;

FIG. 57 depicts a table of aspherical data of a thirteenth embodiment ofthe optical imaging lens according to the present disclosure;

FIG. 58 depicts a cross-sectional view of a fourteenth embodiment of anoptical imaging lens having seven lens elements according to the presentdisclosure;

FIG. 59 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of a fourteenth embodiment of the opticalimaging lens according to the present disclosure;

FIG. 60 depicts a table of optical data for each lens element of afourteenth embodiment of an optical imaging lens according to thepresent disclosure;

FIG. 61 depicts a table of aspherical data of a fourteenth embodiment ofthe optical imaging lens according to the present disclosure;

FIGS. 62A and 62B depict tables for the values of (EFL+ALT)/D67,(T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6,AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL,(EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45),(G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL,T6/(G12+T5) and AAG/(T1+T2) of all fourteen example embodiments.

DETAILED DESCRIPTION

For a more complete understanding of the present disclosure and itsadvantages, reference is now made to the following description taken inconjunction with the accompanying drawings, in which like referencenumbers indicate like features. Persons of ordinary skill in the arthaving the benefit of the present disclosure will understand othervariations for implementing embodiments within the scope of the presentdisclosure, including those specific examples described herein. Thedrawings are not limited to specific scale and similar reference numbersare used for representing similar elements. As used in the disclosuresand the appended claims, the terms “example embodiment,” “exemplaryembodiment,” and “present embodiment” do not necessarily refer to asingle embodiment, although it may, and various example embodiments maybe readily combined and interchanged, without departing from the scopeor spirit of the present disclosure. Furthermore, the terminology asused herein is for the purpose of describing example embodiments onlyand is not intended to be a limitation of the disclosure. In thisrespect, as used herein, the term “in” may include “in” and “on”, andthe terms “a”, “an” and “the” may include singular and pluralreferences. Furthermore, as used herein, the term “by” may also mean“from”, depending on the context. Furthermore, as used herein, the term“if” may also mean “when” or “upon”, depending on the context.Furthermore, as used herein, the words “and/or” may refer to andencompass any and all possible combinations of one or more of theassociated listed items.

The terms “optical axis region”, “periphery region”, “concave”, and“convex” used in this specification and claims should be interpretedbased on the definition listed in the specification by the principle oflexicographer.

In the present disclosure, the optical system may comprise at least onelens element to receive imaging rays that are incident on the opticalsystem over a set of angles ranging from parallel to an optical axis toa half field of view (HFOV) angle with respect to the optical axis. Theimaging rays pass through the optical system to produce an image on animage plane. The term “a lens element having positive refracting power(or negative refracting power)” means that the paraxial refracting powerof the lens element in Gaussian optics is positive (or negative). Theterm “an object-side (or image-side) surface of a lens element” refersto a specific region of that surface of the lens element at whichimaging rays can pass through that specific region. Imaging rays includeat least two types of rays: a chief ray Lc and a marginal ray Lm (asshown in FIG. 1). An object-side (or image-side) surface of a lenselement can be characterized as having several regions, including anoptical axis region, a periphery region, and, in some cases, one or moreintermediate regions, as discussed more fully below.

FIG. 1 is a radial cross-sectional view of a lens element 100. Tworeferential points for the surfaces of the lens element 100 can bedefined: a central point, and a transition point. The central point of asurface of a lens element is a point of intersection of that surface andthe optical axis I. As illustrated in FIG. 1, a first central point CP1may be present on the object-side surface 110 of lens element 100 and asecond central point CP2 may be present on the image-side surface 120 ofthe lens element 100. The transition point is a point on a surface of alens element, at which the line tangent to that point is perpendicularto the optical axis I. The optical boundary OB of a surface of the lenselement is defined as a point at which the radially outermost marginalray Lm passing through the surface of the lens element intersects thesurface of the lens element. All transition points lie between theoptical axis I and the optical boundary OB of the surface of the lenselement. If multiple transition points are present on a single surface,then these transition points are sequentially named along the radialdirection of the surface with reference numerals starting from the firsttransition point. For example, the first transition point, e.g., TP1,(closest to the optical axis I), the second transition point, e.g., TP2,(as shown in FIG. 4), and the Nth transition point (farthest from theoptical axis I).

The region of a surface of the lens element from the central point tothe first transition point TP1 is defined as the optical axis region,which includes the central point. The region located radially outside ofthe farthest Nth transition point from the optical axis I to the opticalboundary OB of the surface of the lens element is defined as theperiphery region. In some embodiments, there may be intermediate regionspresent between the optical axis region and the periphery region, withthe number of intermediate regions depending on the number of thetransition points.

The shape of a region is convex if a collimated ray being parallel tothe optical axis I and passing through the region is bent toward theoptical axis I such that the ray intersects the optical axis I on theimage side A2 of the lens element. The shape of a region is concave ifthe extension line of a collimated ray being parallel to the opticalaxis I and passing through the region intersects the optical axis I onthe object side A1 of the lens element.

Additionally, referring to FIG. 1, the lens element 100 may also have amounting portion 130 extending radially outward from the opticalboundary OB. The mounting portion 130 is typically used to physicallysecure the lens element to a corresponding element of the optical system(not shown). Imaging rays do not reach the mounting portion 130. Thestructure and shape of the mounting portion 130 are only examples toexplain the technologies, and should not be taken as limiting the scopeof the present disclosure. The mounting portion 130 of the lens elementsdiscussed below may be partially or completely omitted in the followingdrawings.

Referring to FIG. 2, optical axis region Z1 is defined between centralpoint CP and first transition point TP1. Periphery region Z2 is definedbetween TP1 and the optical boundary OB of the surface of the lenselement. Collimated ray 211 intersects the optical axis I on the imageside A2 of lens element 200 after passing through optical axis regionZ1, i.e., the focal point of collimated ray 211 after passing throughoptical axis region Z1 is on the image side A2 of the lens element 200at point R in FIG. 2. Accordingly, since the ray itself intersects theoptical axis I on the image side A2 of the lens element 200, opticalaxis region Z1 is convex. On the contrary, collimated ray 212 divergesafter passing through periphery region Z2. The extension line EL ofcollimated ray 212 after passing through periphery region Z2 intersectsthe optical axis I on the object side A1 of lens element 200, i.e., thefocal point of collimated ray 212 after passing through periphery regionZ2 is on the object side A1 at point M in FIG. 2. Accordingly, since theextension line EL of the ray intersects the optical axis I on the objectside A1 of the lens element 200, periphery region Z2 is concave. In thelens element 200 illustrated in FIG. 2, the first transition point TP1is the border of the optical axis region and the periphery region, i.e.,TP1 is the point at which the shape changes from convex to concave.

Alternatively, there is another way for a person having ordinary skillin the art to determine whether an optical axis region is convex orconcave by referring to the sign of “Radius” (the “R” value), which isthe paraxial radius of shape of a lens surface in the optical axisregion. The R value is commonly used in conventional optical designsoftware such as Zemax and CodeV. The R value usually appears in thelens data sheet in the software. For an object-side surface, a positiveR value defines that the optical axis region of the object-side surfaceis convex, and a negative R value defines that the optical axis regionof the object-side surface is concave. Conversely, for an image-sidesurface, a positive R value defines that the optical axis region of theimage-side surface is concave, and a negative R value defines that theoptical axis region of the image-side surface is convex. The resultfound by using this method should be consistent with the methodutilizing intersection of the optical axis by rays/extension linesmentioned above, which determines surface shape by referring to whetherthe focal point of a collimated ray being parallel to the optical axis Iis on the object-side or the image-side of a lens element. As usedherein, the terms “a shape of a region is convex (concave),” “a regionis convex (concave),” and “a convex-(concave-) region,” can be usedalternatively.

FIG. 3, FIG. 4 and FIG. 5 illustrate examples of determining the shapeof lens element regions and the boundaries of regions under variouscircumstances, including the optical axis region, the periphery region,and intermediate regions as set forth in the present specification.

FIG. 3 is a radial cross-sectional view of a lens element 300. Asillustrated in FIG. 3, only one transition point TP1 appears within theoptical boundary OB of the image-side surface 320 of the lens element300. Optical axis region Z1 and periphery region Z2 of the image-sidesurface 320 of lens element 300 are illustrated. The R value of theimage-side surface 320 is positive (i.e., R>0). Accordingly, the opticalaxis region Z1 is concave.

In general, the shape of each region demarcated by the transition pointwill have an opposite shape to the shape of the adjacent region(s).Accordingly, the transition point will define a transition in shape,changing from concave to convex at the transition point or changing fromconvex to concave. In FIG. 3, since the shape of the optical axis regionZ1 is concave, the shape of the periphery region Z2 will be convex asthe shape changes at the transition point TP1.

FIG. 4 is a radial cross-sectional view of a lens element 400. Referringto FIG. 4, a first transition point TP1 and a second transition pointTP2 are present on the object-side surface 410 of lens element 400. Theoptical axis region Z1 of the object-side surface 410 is defined betweenthe optical axis I and the first transition point TP1. The R value ofthe object-side surface 410 is positive (i.e., R>0). Accordingly, theoptical axis region Z1 is convex.

The periphery region Z2 of the object-side surface 410, which is alsoconvex, is defined between the second transition point TP2 and theoptical boundary OB of the object-side surface 410 of the lens element400. Further, intermediate region Z3 of the object-side surface 410,which is concave, is defined between the first transition point TP1 andthe second transition point TP2. Referring once again to FIG. 4, theobject-side surface 410 includes an optical axis region Z1 locatedbetween the optical axis I and the first transition point TP1, anintermediate region Z3 located between the first transition point TP1and the second transition point TP2, and a periphery region Z2 locatedbetween the second transition point TP2 and the optical boundary OB ofthe object-side surface 410. Since the shape of the optical axis regionZ1 is designed to be convex, the shape of the intermediate region Z3 isconcave as the shape of the intermediate region Z3 changes at the firsttransition point TP1, and the shape of the periphery region Z2 is convexas the shape of the periphery region Z2 changes at the second transitionpoint TP2.

FIG. 5 is a radial cross-sectional view of a lens element 500. Lenselement 500 has no transition point on the object-side surface 510 ofthe lens element 500. For a surface of a lens element with no transitionpoint, for example, the object-side surface 510 the lens element 500,the optical axis region Z1 is defined as the region between 0-50% of thedistance between the optical axis I and the optical boundary OB of thesurface of the lens element and the periphery region is defined as theregion between 50%-100% of the distance between the optical axis I andthe optical boundary OB of the surface of the lens element. Referring tolens element 500 illustrated in FIG. 5, the optical axis region Z1 ofthe object-side surface 510 is defined between the optical axis I and50% of the distance between the optical axis I and the optical boundaryOB. The R value of the object-side surface 510 is positive (i.e., R>0).Accordingly, the optical axis region Z1 is convex. For the object-sidesurface 510 of the lens element 500, because there is no transitionpoint, the periphery region Z2 of the object-side surface 510 is alsoconvex. It should be noted that lens element 500 may have a mountingportion (not shown) extending radially outward from the periphery regionZ2.

In the present disclosure, examples of an optical imaging lens which maybe a prime lens are provided. Example embodiments of an optical imaginglens may comprise a first lens element, a second lens element, a thirdlens element, a fourth lens element, a fifth lens element, a sixth lenselement and a seventh lens element. Each of the lens elements maycomprise an object-side surface facing toward an object side allowingimaging rays to pass through and an image-side surface facing toward animage side allowing the imaging rays to pass through. These lenselements may be arranged sequentially from the object side to the imageside along an optical axis, and example embodiments of the lens may haverefracting power of the optical imaging lens consist of the seven lenselements described above. Through controlling shape of the surfaces andrange of the parameters, the optical imaging lens in example embodimentsmay achieve good imaging quality, effectively shorten the system length,reduce the f-number and enlarge the field of view.

In some embodiments, the lens elements are designed in light of theoptical characteristics, system length, f-number and/or field of view ofthe optical imaging lens. For example, the positive refracting power ofthe third lens element, the convex periphery region of the object-sidesurface of the third lens element, the convex optical axis region of theimage-side surface of the fourth lens element, the concave optical axisregion of the object-side surface of the sixth lens element and theconcave optical axis region of the object-side surface of the seventhlens element, together with either the positive refracting power of thefirst lens element or the concave periphery region of the object-sidesurface of the fourth lens element, it may be beneficial to adjust thelongitudinal spherical aberration, the curvature of field in thesagittal and tangential directions, reduce the distortion aberration andenlarge the field of view of the optical imaging lens.

When the optical imaging lens further satisfies (EFL+ALT)/D67≤4.800 andfulfills some limitations of surface shape and refracting power, it maybe beneficial to shorten the system length; preferably, the opticalimaging lens may satisfy 3.100≤(EFL+ALT)/D67≤4.800.

When the optical imaging lens further satisfies at least one of(T5+G56+T6)/T1≤2.500, EFL/(T1+G12+T2)≥4.500, (T3+AAG)/T4≥5.500,(T3+T4)/T6≤1.800, AAG/(G12+G23+G34)≥2.800, (T1+T5)/G34≤3.800,(G12+T6)/(G23+G45)≤2.500, (T3+T4+AAG)/BFL≤4.800, (EFL+T5)/AAG≥1.800,(T4+G45+T5)/T2≤5.000, TTL/(T1+T5+T6+T7)≤3.800, ALT/(T1+G45)≤4.100,(G34+T6)/(G12+T5)≥2.500, TL/(G34+T4+G45+G56)≤5.000, (T2+T7)/G45≤5.000,EFL/BFL≥4.500, T6/(G12+T5)≥1.500 or AAG/(T1+T2)≤4.000, the thickness ofthe lens elements and/or the air gaps between the lens elements may beshortened properly to avoid any excessive value of the parameters whichmay be unfavorable and may thicken the system length of the whole systemof the optical imaging lens, and to avoid any insufficient value of theparameters which may increase the production difficulty of the opticalimaging lens. Preferably, the optical imaging lens may satisfy at leastone of 1.300≤(T5+G56+T6)/T1≤2.500, 4.500≤EFL/(T1+G12+T2)≤6.100,5.500≤(T3+AAG)/T4≤11.000, 0.600 (T3+T4)/T6≤1.800,2.800≤AAG/(G12+G23+G34)≤4.000, 1.800 (T1+T5)/G34≤3.800, 0.800(G12+T6)/(G23+G45)≤2.500, 2.300 (T3+T4+AAG)/BFL≤4.800, 1.800(EFL+T5)/AAG≤2.900, 2.800 (T4+G45+T5)/T2≤5.000, 2.200TTL/(T1+T5+T6+T7)≤3.800, 2.600 ALT/(T1+G45)≤4.100,2.500≤(G34+T6)/(G12+T5)≤4.100, 3.400 TL/(G34+T4+G45+G56)≤5.000, 1.400(T2+T7)/G45≤5.000, 4.500 EFL/BFL≤7.100, 1.500 T6/(G12+T5)≤2.800

1.700 AAG/(T1+T2)≤4.000.

In light of the unpredictability in an optical system, satisfying theseinequalities listed above may result in shortening the system length ofthe optical imaging lens, lowering the f-number, enlarging the field ofview, promoting the imaging quality and/or increasing the yield in theassembly process in the present disclosure.

When implementing example embodiments, more details about the convex orconcave surface or refracting power could be incorporated for onespecific lens element or broadly for a plurality of lens elements toimprove the control for the system performance and/or resolution, orpromote the yield. For example, in an example embodiment, each lenselement may be made from all kinds of transparent material, such asglass, resin, etc. It is noted that the details listed here could beincorporated in example embodiments if no inconsistency occurs.

Several example embodiments and associated optical data will now beprovided for illustrating example embodiments of an optical imaging lenswith a short system length, good optical characteristics, a wide fieldof view and/or a low f-number. Reference is now made to FIGS. 6-9. FIG.6 illustrates an example cross-sectional view of an optical imaging lens1 having seven lens elements of the optical imaging lens according to afirst example embodiment. FIG. 7 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 1 according to an example embodiment. FIG. 8illustrates an example table of optical data of each lens element of theoptical imaging lens 1 according to an example embodiment. FIG. 9depicts an example table of aspherical data of the optical imaging lens1 according to an example embodiment.

As shown in FIG. 6, the optical imaging lens 1 of the present embodimentmay comprise, in the order from an object side A1 to an image side A2along an optical axis, an aperture stop STO, a first lens element L1, asecond lens element L2, a third lens element L3, a fourth lens elementL4, a fifth lens element L5, a sixth lens element L6 and a seventh lenselement L7. A filtering unit TF and an image plane IMA of an imagesensor may be positioned at the image side A2 of the optical lens 1.Each of the first, second, third, fourth, fifth, sixth and seventh lenselements L1, L2, L3, L4, L5, L6, L7 and the filtering unit TF maycomprise an object-side surface L1A1/L2A1/L3A1/L4A1/L5A1/L6A1/L7A1/TFA1facing toward the object side A1 and an image-side surfaceL1A2/L2A2/L3A2/L4A2/L5A2/L6A2/L7A2/TFA2 facing toward the image side A2.The filtering unit TF, positioned between the seventh lens element L7and the image plane IMA, may selectively absorb light with specificwavelength(s) from the light passing through optical imaging lens 1. Theexample embodiment of the filtering unit TF which may selectively absorblight with specific wavelength(s) from the light passing through opticalimaging lens 1 may be an IR cut filter (infrared cut filter). Then, IRlight may be absorbed, and this may prohibit the IR light, which mightnot be seen by human eyes, from producing an image on the image planeIMA.

Please note that during the normal operation of the optical imaging lens1, the distance between any two adjacent lens elements of the first,second, third, fourth, fifth, sixth and seventh lens elements L1, L2,L3, L4, L5, L6 and L7 may be an unchanged value, i.e. the opticalimaging lens 1 may be a prime lens.

Example embodiments of each lens element of the optical imaging lens 1,which may be constructed by glass, plastic material or other transparentmaterial, will now be described with reference to the drawings.

An example embodiment of the first lens element L1, which may beconstructed by plastic material, may have positive refracting power. Onthe object-side surface L1A1, an optical axis region L1A1C may be convexand a periphery region L1A1P may be convex. On the image-side surfaceL1A2, an optical axis region L1A2C may be concave and a periphery regionL1A2P may be concave. Both the object-side surface L1A1 and theimage-side surface L1A2 of the optical imaging lens 1 are asphericalsurfaces.

An example embodiment of the second lens element L2, which may beconstructed by plastic material, may have negative refracting power. Onthe object-side surface L2A1, an optical axis region L2A1C may be convexand a periphery region L2A1P may be convex. On the image-side surfaceL2A2, an optical axis region L2A2C may be concave and a periphery regionL2A2P may be concave. Both the object-side surface L2A1 and theimage-side surface L2A2 of the optical imaging lens 1 are asphericalsurfaces.

An example embodiment of the third lens element L3, which may beconstructed by plastic material, may have positive refracting power. Onthe object-side surface L3A1, an optical axis region L3A1C may be convexand a periphery region L3A1P may be convex. On the image-side surfaceL3A2, an optical axis region L3A2C may be concave and a periphery regionL3A2P may be concave. Both the object-side surface L3A1 and theimage-side surface L3A2 of the optical imaging lens 1 are asphericalsurfaces.

An example embodiment of the fourth lens element L4, which may beconstructed by plastic material, may have positive refracting power. Onthe object-side surface L4A1, an optical axis region L4A1C may beconcave and a periphery region L4A1P may be concave. On the image-sidesurface L4A2, an optical axis region L4A2C may be convex and a peripheryregion L4A2P may be convex. Both the object-side surface L4A1 and theimage-side surface L4A2 of the optical imaging lens 1 are asphericalsurfaces.

An example embodiment of the fifth lens element L5, which may beconstructed by glass material, may have negative refracting power. Onthe object-side surface L5A1, an optical axis region L5A1C may be convexand a periphery region L5A1P may be concave. On the image-side surfaceL5A2, an optical axis region L5A2C may be concave and a periphery regionL5A2P may be convex. Both the object-side surface L5A1 and theimage-side surface L5A2 of the optical imaging lens 1 are asphericalsurfaces.

An example embodiment of the sixth lens element L6, which may beconstructed by plastic material, may have positive refracting power. Onthe object-side surface L6A1, an optical axis region L6A1C may beconcave and a periphery region L6A1P may be concave. On the image-sidesurface L6A2, an optical axis region L6A2C may be convex and a peripheryregion L6A2P may be convex. Both the object-side surface L6A1 and theimage-side surface L6A2 of the optical imaging lens 1 are asphericalsurfaces.

An example embodiment of the seventh lens element L7, which may beconstructed by plastic material, may have negative refracting power. Onthe object-side surface L7A1, an optical axis region L7A1C may beconcave and a periphery region L7A1P may be convex. On the image-sidesurface L7A2, an optical axis region L7A2C may be concave and aperiphery region L7A2P may be convex. Both the object-side surface L7A1and the image-side surface L7A2 of the optical imaging lens 1 areaspherical surfaces.

In example embodiments, air gaps may exist between each pair of adjacentlens elements, as well as between the seventh lens element L7 and thefiltering unit TF, and the filtering unit TF and the image plane IMA ofthe image sensor. Please note, in other embodiments, any of theaforementioned air gaps may or may not exist. For example, profiles ofopposite surfaces of a pair of adjacent lens elements may align withand/or attach to each other, and in such situations, the air gap mightnot exist.

FIG. 8 depicts the optical characteristics of each lens elements in theoptical imaging lens 1 of the present embodiment. Please also refer toFIG. 62A for the values of (EFL+ALT)/D67, (T5+G56+T6)/T1,EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6, AAG/(G12+G23+G34),(T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG,(T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45), (G34+T6)/(G12+T5),TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL, T6/(G12+T5) and AAG/(T1+T2)corresponding to the present embodiment.

The totaled 14 aspherical surfaces, including the object-side surfaceL1A1 and the image-side surface L1A2 of the first lens element L1, theobject-side surface L2A1 and the image-side surface L2A2 of the secondlens element L2, the object-side surface L3A1 and the image-side surfaceL3A2 of the third lens element L3, the object-side surface L4A1 and theimage-side surface L4A2 of the fourth lens element L4, the object-sidesurface L5A1 and the image-side surface L5A2 of the fifth lens elementL5, the object-side surface L6A1 and the image-side surface L6A2 of thesixth lens element L6 and the object-side surface L7A1 and theimage-side surface L7A2 of the seventh lens element L7 may all bedefined by the following aspherical formula:

wherein, Y represents the perpendicular distance between the point ofthe aspherical surface and the optical axis; Z represents the depth ofthe aspherical surface (the perpendicular distance between the point ofthe aspherical surface at a distance Y from the optical axis and thetangent plane of the vertex on the optical axis of the asphericalsurface); R represents the radius of curvature of the surface of thelens element; K represents a conic constant; a_(2i) represents anaspherical coefficient of 2i^(th) level. The values of each asphericalparameter are shown in FIG. 9.

Referring to FIG. 7(a), a longitudinal spherical aberration of theoptical imaging lens in the present embodiment is shown in coordinatesin which the horizontal axis represents focus and the vertical axisrepresents field of view, and FIG. 7(b), curvature of field of theoptical imaging lens in the present embodiment in the sagittal directionis shown in coordinates in which the horizontal axis represents focusand the vertical axis represents image height, and FIG. 7(c), curvatureof field in the tangential direction of the optical imaging lens in thepresent embodiment is shown in coordinates in which the horizontal axisrepresents curvature of field and the vertical axis represents imageheight, and FIG. 7(d), distortion aberration of the optical imaging lensin the present embodiment is shown in coordinates in which thehorizontal axis represents percentage and the vertical axis representsimage height.

The curves of different wavelengths (470 nm, 555 nm, 650 nm) may beclose to each other. This represents that off-axis light with respect tothese wavelengths may be focused around an image point. From thevertical deviation of each curve shown therein, the offset of theoff-axis light relative to the image point may be within −0.06˜0.03 mm.Therefore, the present embodiment may improve the longitudinal sphericalaberration with respect to different wavelengths. For curvature of fieldin the sagittal direction, the focus variation with respect to the threewavelengths in the whole field may fall within −0.04˜0.02 mm, forcurvature of field in the tangential direction, the focus variation withrespect to the three wavelengths in the whole field may fall within−0.04˜0.14 mm, and the variation of the distortion aberration may bewithin 0˜4%.

According to the values of the aberrations, it is shown that the opticalimaging lens 1 of the present embodiment, with the HFOV as large as42.149 degrees, Fno as small as 1.600 and the system length as short as5.670 mm, may be capable of providing good imaging quality as well asgood optical characteristics.

Reference is now made to FIGS. 10-13. FIG. 10 illustrates an examplecross-sectional view of an optical imaging lens 2 having seven lenselements of the optical imaging lens according to a second exampleembodiment. FIG. 11 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 2 according to the second example embodiment. FIG. 12 shows anexample table of optical data of each lens element of the opticalimaging lens 2 according to the second example embodiment. FIG. 13 showsan example table of aspherical data of the optical imaging lens 2according to the second example embodiment.

As shown in FIG. 10, the optical imaging lens 2 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the second embodiment and the first embodimentmay include the radius of curvature, thickness of each lens element, thevalue of each air gap, aspherical data, related optical parameters, suchas back focal length, and the configuration of the concave/convex shapeof the object-side surface L7A1; but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of each lens element may be similar to those in thefirst embodiment. Here and in the embodiments hereinafter, for clearlyshowing the drawings of the present embodiment, only the surface shapeswhich are different from that in the first embodiment may be labeled.Specifically, the differences of configuration of surface shape mayinclude: a periphery region L7A1P on the object-side surface L7A1 of theseventh lens element L7 may be cocave. Please refer to FIG. 12 for theoptical characteristics of each lens elements in the optical imaginglens 2 of the present embodiment, and please refer to FIG. 62A for thevalues of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4,(T3+T4)/T6, AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45),(T3+T4+AAG)/BFL, (EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7),ALT/(T1+G45), (G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45,EFL/BFL, T6/(G12+T5) and AAG/(T1+T2) of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 11(a), the offsetof the off-axis light relative to the image point may be within−0.03˜0.02 mm. As the curvature of field in the sagittal direction shownin FIG. 11(b), the focus variation with regard to the three wavelengthsin the whole field may fall within −0.03˜0.02 mm. As the curvature offield in the tangential direction shown in FIG. 11(c), the focusvariation with regard to the three wavelengths in the whole field mayfall within −0.04˜0.08 mm. As shown in FIG. 11(d), the variation of thedistortion aberration may be within 0˜5%. Compared with the firstembodiment, the longitudinal spherical aberration, the curvature offield in both the sagittal and tangential directions may be smaller inthe present embodiment.

According to the value of the aberrations, it is shown that the opticalimaging lens 2 of the present embodiment, with the HFOV as large as43.102 degrees, Fno as small as 1.600 and the system length as short as5.690 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater in the presentembodiment.

Reference is now made to FIGS. 14-17. FIG. 14 illustrates an examplecross-sectional view of an optical imaging lens 3 having seven lenselements of the optical imaging lens according to a third exampleembodiment. FIG. 15 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 3 according to the third example embodiment. FIG. 16 shows anexample table of optical data of each lens element of the opticalimaging lens 3 according to the third example embodiment. FIG. 17 showsan example table of aspherical data of the optical imaging lens 3according to the third example embodiment.

As shown in FIG. 14, the optical imaging lens 3 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprisea an aperture stop STO, first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the third embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data and related opticalparameters, such as back focal length; but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1, L6A1 and L7A1 facing to the object side A1and the image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of the first, second, third, fifth, sixth andseventh lens elements L1, L2, L3, L5, L6, L7 may be similar to those inthe first embodiment. The fourth lens element L4 has negative refractingpower. Please refer to FIG. 16 for the optical characteristics of eachlens elements in the optical imaging lens 3 of the present embodiment,and please refer to FIG. 62A for the values of (EFL+ALT)/D67,(T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6,AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL,(EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45),(G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL,T6/(G12+T5) and AAG/(T1+T2) of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 15(a), the offsetof the off-axis light relative to the image point may be within−0.06˜0.03 mm. As the curvature of field in the sagittal direction shownin FIG. 15(b), the focus variation with regard to the three wavelengthsin the whole field may fall within −0.04˜0.04 mm. As the curvature offield in the tangential direction shown in FIG. 15(c), the focusvariation with regard to the three wavelengths in the whole field mayfall within −0.12˜0.06 mm. As shown in FIG. 15(D), the variation of thedistortion aberration may be within 0˜4.5%.

According to the value of the aberrations, it is shown that the opticalimaging lens 3 of the present embodiment, with the HFOV as large as43.129 degrees, Fno as small as 1.600 and the system length as short as5.549 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater and the system lengthof the optical imaging lens 3 in the present embodiment may be shorter.

Reference is now made to FIGS. 18-21. FIG. 18 illustrates an examplecross-sectional view of an optical imaging lens 4 having seven lenselements of the optical imaging lens according to a fourth exampleembodiment. FIG. 19 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 4 according to the fourth embodiment. FIG. 20 shows an exampletable of optical data of each lens element of the optical imaging lens 4according to the fourth example embodiment. FIG. 21 shows an exampletable of aspherical data of the optical imaging lens 4 according to thefourth example embodiment.

As shown in FIG. 18, the optical imaging lens 4 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the fourth embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, and the configuration of the concave/convexshape of the object-side surface L7A1; but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of each lens element may be similar to those in thefirst embodiment. Specifically, the differences of configuration ofsurface shape may include: a periphery region L7A1P on the object-sidesurface L7A1 of the seventh lens element L7 may be concave. Please referto FIG. 20 for the optical characteristics of each lens elements in theoptical imaging lens 4 of the present embodiment, please refer to FIG.62A for the values of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2),(T3+AAG)/T4, (T3+T4)/T6, AAG/(G12+G23+G34), (T1+T5)/G34,(G12+T6)/(G23+G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG, (T4+G45+T5)/T2,TTL/(T1+T5+T6+T7), ALT/(T1+G45), (G34+T6)/(G12+T5), TL/(G34+T4+G45+G56),(T2+T7)/G45, EFL/BFL, T6/(G12+T5) and AAG/(T1+T2) of the presentembodiment.

As the longitudinal spherical aberration shown in FIG. 19(a), the offsetof the off-axis light relative to the image point may be within−0.025˜0.02 mm. As the curvature of field in the sagittal directionshown in FIG. 19(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.03˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 19(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.06˜0.07 mm. As shown in FIG. 19(d), the variation ofthe distortion aberration may be within 0˜4%. Compared with the firstembodiment, the longitudinal spherical aberration and the curvature offield in both the sagittal and tangential directions may be smaller inthe present embodiment.

According to the value of the aberrations, it is shown that the opticalimaging lens 4 of the present embodiment, with the HFOV as large as42.472 degrees, Fno as small as 1.600 and the system length as short as5.862 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater in the presentembodiment.

Reference is now made to FIGS. 22-25. FIG. 22 illustrates an examplecross-sectional view of an optical imaging lens 5 having seven lenselements of the optical imaging lens according to a fifth exampleembodiment. FIG. 23 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 5 according to the fifth embodiment. FIG. 24 shows an example tableof optical data of each lens element of the optical imaging lens 5according to the fifth example embodiment. FIG. 25 shows an exampletable of aspherical data of the optical imaging lens 5 according to thefifth example embodiment.

As shown in FIG. 22, the optical imaging lens 5 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the fifth embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, and the configuration of the concave/convexshape of the object-side surface L7A1; but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfacesL1A1, L2A1, L3A1, L4A, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of each lens element may be similar to those in thefirst embodiment. Specifically, the differences of configuration ofsurface shape may include: a periphery region L7A1P on the object-sidesurface L7A1 of the seventh lens element L7 may be concave. Please referto FIG. 24 for the optical characteristics of each lens elements in theoptical imaging lens 5 of the present embodiment, please refer to FIG.62A for the values of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2),(T3+AAG)/T4, (T3+T4)/T6, AAG/(G12+G23+G34), (T1+T5)/G34,(G12+T6)/(G23+G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG, (T4+G45+T5)/T2,TTL/(T1+T5+T6+T7), ALT/(T1+G45), (G34+T6)/(G12+T5), TL/(G34+T4+G45+G56),(T2+T7)/G45, EFL/BFL, T6/(G12+T5) and AAG/(T1+T2) of the presentembodiment.

As the longitudinal spherical aberration shown in FIG. 23(a), the offsetof the off-axis light relative to the image point may be within−0.025˜0.015 mm. As the curvature of field in the sagittal directionshown in FIG. 23(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.02˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 23(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.04˜0.12 mm. As shown in FIG. 23(d), the variation ofthe distortion aberration may be within 0˜3.5%. Compared with the firstembodiment, the longitudinal spherical aberration, the curvature offield in both the sagittal and tangential directions and the distortionaberration may be smaller in the present embodiment.

According to the value of the aberrations, it is shown that the opticalimaging lens 5 of the present embodiment, with the HFOV as large as42.183 degrees, Fno as small as 1.600 and the system length as short as5.916 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater in the presentembodiment.

Reference is now made to FIGS. 26-29. FIG. 26 illustrates an examplecross-sectional view of an optical imaging lens 6 having seven lenselements of the optical imaging lens according to a sixth exampleembodiment. FIG. 27 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 6 according to the sixth embodiment. FIG. 28 shows an example tableof optical data of each lens element of the optical imaging lens 6according to the sixth example embodiment. FIG. 29 shows an exampletable of aspherical data of the optical imaging lens 6 according to thesixth example embodiment.

As shown in FIG. 26, the optical imaging lens 6 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the sixth embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, and the configuration of the concave/convexshape of the object-side surface L7A1; but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of the first, second, third, fifth, sixth andseventh lens elements L1, L2, L3, L5, L6, L7 may be similar to those inthe first embodiment. Specifically, the differences of configuration ofsurface shape may include: a periphery region L7A1P on the object-sidesurface L7A1 of the seventh lens element L7 may be concave. The forthlens element L4 has negative refracting power. Please refer to FIG. 28for the optical characteristics of each lens elements in the opticalimaging lens 6 of the present embodiment, please refer to FIG. 62A forthe values of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2),(T3+AAG)/T4, (T3+T4)/T6, AAG/(G12+G23+G34), (T1+T5)/G34,(G12+T6)/(G23+G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG, (T4+G45+T5)/T2,TTL/(T1+T5+T6+T7), ALT/(T1+G45), (G34+T6)/(G12+T5), TL/(G34+T4+G45+G56),(T2+T7)/G45, EFL/BFL, T6/(G12+T5) and AAG/(T1+T2) of the presentembodiment.

As the longitudinal spherical aberration shown in FIG. 27(a), the offsetof the off-axis light relative to the image point may be within−0.03˜0.025 mm. As the curvature of field in the sagittal directionshown in FIG. 27(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.04˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 27(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.03˜0.09 mm. As shown in FIG. 27(d), the variation ofthe distortion aberration may be within 0˜4.5%. Compared with the firstembodiment, the longitudinal spherical aberration and the curvature offield in the tangential direction may be smaller in the presentembodiment.

According to the value of the aberrations, it is shown that the opticalimaging lens 6 of the present embodiment, with the HFOV as large as43.133 degrees, Fno as small as 1.600 and the system length as short as5.674 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater in the presentembodiment.

Reference is now made to FIGS. 30-33. FIG. 30 illustrates an examplecross-sectional view of an optical imaging lens 7 having seven lenselements of the optical imaging lens according to a seventh exampleembodiment. FIG. 31 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 7 according to the seventh embodiment. FIG. 32 shows an exampletable of optical data of each lens element of the optical imaging lens 7according to the seventh example embodiment. FIG. 33 shows an exampletable of aspherical data of the optical imaging lens 7 according to theseventh example embodiment.

As shown in FIG. 30, the optical imaging lens 7 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the seventh embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, and the configuration of the concave/convexshape of the object-side surface L7A1; but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of the first, second, third, fifth, sixth andseventh lens elements L1, L2, L3, L5, L6, L7 may be similar to those inthe first embodiment. Specifically, the differences of configuration ofsurface shape may include: a periphery region L7A1P on the object-sidesurface L7A1 of the seventh lens element L7 may be concave. The forthlens element L4 has negative refracting power. Please refer to FIG. 32for the optical characteristics of each lens elements in the opticalimaging lens 7 of the present embodiment, please refer to FIG. 62A forthe values of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2),(T3+AAG)/T4, (T3+T4)/T6, AAG/(G12+G23+G34), (T1+T5)/G34,(G12+T6)/(G23+G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG, (T4+G45+T5)/T2,TTL/(T1+T5+T6+T7), ALT/(T1+G45), (G34+T6)/(G12+T5), TL/(G34+T4+G45+G56),(T2+T7)/G45, EFL/BFL, T6/(G12+T5) and AAG/(T1+T2) of the presentembodiment.

As the longitudinal spherical aberration shown in FIG. 31(a), the offsetof the off-axis light relative to the image point may be within−0.025˜0.025 mm. As the curvature of field in the sagittal directionshown in FIG. 31(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.04˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 31(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.05˜0.08 mm. As shown in FIG. 31(d), the variation ofthe distortion aberration may be within 0˜3.5%. Compared with the firstembodiment, the longitudinal spherical aberration, the curvature offield in the tangential direction and the distortion aberration may besmaller in the present embodiment.

According to the value of the aberrations, it is shown that the opticalimaging lens 7 of the present embodiment, with the HFOV as large as44.000 degrees, Fno as small as 1.600 and the system length as short as5.586 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater and the system lengthof the optical imaging lens 7 in the present embodiment may be shorter.

Reference is now made to FIGS. 34-37. FIG. 34 illustrates an examplecross-sectional view of an optical imaging lens 8 having seven lenselements of the optical imaging lens according to an eighth exampleembodiment. FIG. 35 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 8 according to the eighth embodiment. FIG. 36 shows an exampletable of optical data of each lens element of the optical imaging lens 8according to the eighth example embodiment. FIG. 37 shows an exampletable of aspherical data of the optical imaging lens 8 according to theeighth example embodiment.

As shown in FIG. 34, the optical imaging lens 8 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the eighth embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, the configuration of the concave/convex shapeof the object-side surface L7A1, and the negative refracting power ofthe fourth lens element L4; but the configuration of the concave/convexshape of surfaces comprising the object-side surfaces L1A1, L2A1, L3A1,L4A1, L5A1 and L6A1 facing to the object side A1 and the image-sidesurfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2 facing to the imageside A2, and positive or negative configuration of the refracting powerof the lens element other than the fourth lens element L4 may be similarto those in the first embodiment. Specifically, the differences ofconfiguration of surface shape may include: a periphery region L7A1P onthe object-side surface L7A1 of the seventh lens element L7 may beconcave. Please refer to FIG. 36 for the optical characteristics of eachlens elements in the optical imaging lens 8 of the present embodiment,and please refer to FIG. 62B for the values of (EFL+ALT)/D67,(T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6,AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL,(EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45),(G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL,T6/(G12+T5) and AAG/(T1+T2) of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 35(a), the offsetof the off-axis light relative to the image point may be within−0.025˜0.02 mm. As the curvature of field in the sagittal directionshown in FIG. 35(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.03˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 35(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.06˜0.05 mm. As shown in FIG. 35(d), the variation ofthe distortion aberration may be within 0˜3%. Compared with the firstembodiment, the longitudinal spherical aberration, the curvature offield in both the sagittal and tangential directions and the distortionaberration may be smaller here.

According to the value of the aberrations, it is shown that the opticalimaging lens 8 of the present embodiment, with the HFOV as large as44.009 degrees, Fno as small as 1.600 and the system length as short as5.657 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater and the system lengthof the optical imaging lens 8 in the present embodiment may be shorter.

Reference is now made to FIGS. 38-41. FIG. 38 illustrates an examplecross-sectional view of an optical imaging lens 9 having seven lenselements of the optical imaging lens according to a ninth exampleembodiment. FIG. 39 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 9 according to the ninth embodiment. FIG. 40 shows an example tableof optical data of each lens element of the optical imaging lens 9according to the ninth example embodiment. FIG. 41 shows an exampletable of aspherical data of the optical imaging lens 9 according to theninth example embodiment.

As shown in FIG. 38, the optical imaging lens 9 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the ninth embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, the configuration of the concave/convex shapeof the object-side surface L7A1, and the negative refracting power ofthe fourth lens element L4; but the configuration of the concave/convexshape of surfaces comprising the object-side surfaces L1A1, L2A1, L3A1,L4A1, L5A1 and L6A1 facing to the object side A1 and the image-sidesurfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2 facing to the imageside A2, and positive or negative configuration of the refracting powerof the lens element other than the fourth lens element L4 may be similarto those in the first embodiment. Specifically, the differences ofconfiguration of surface shape may include: a periphery region L7A1P onthe object-side surface L7A1 of the seventh lens element L7 may beconcave. Please refer to FIG. 40 for the optical characteristics of eachlens elements in the optical imaging lens 9 of the present embodiment,please refer to FIG. 62B for the values of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6, AAG/(G12+G23 +G34),(T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG,(T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45), (G34+T6)/(G12+T5),TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL, T6/(G12+T5) and AAG/(T1+T2)of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 39(a), the offsetof the off-axis light relative to the image point may be within−0.025˜0.03 mm. As the curvature of field in the sagittal directionshown in FIG. 39(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.03˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 39(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.05˜0.10 mm. As shown in FIG. 39(d), the variation ofthe distortion aberration may be within 0˜4%. Compared with the firstembodiment, the longitudinal spherical aberration and the curvature offield in both the sagittal and tangential directions may be smallerhere.

According to the value of the aberrations, it is shown that the opticalimaging lens 9 of the present embodiment, with the HFOV as large as43.902 degrees, Fno as small as 1.600 and the system length as short as5.566 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater and the system lengthof the optical imaging lens 9 in the present embodiment may be shorter.

Reference is now made to FIGS. 42-45. FIG. 42 illustrates an examplecross-sectional view of an optical imaging lens 10 having seven lenselements of the optical imaging lens according to a tenth exampleembodiment. FIG. 43 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 10 according to the tenth embodiment. FIG. 44 shows an exampletable of optical data of each lens element of the optical imaging lens10 according to the tenth example embodiment. FIG. 45 shows an exampletable of aspherical data of the optical imaging lens 10 according to thetenth example embodiment.

As shown in FIG. 42, the optical imaging lens 10 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the tenth embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, the configuration of the concave/convex shapeof the object-side surface L7A1, and the negative refracting power ofthe fourth lens element L4; but the configuration of the concave/convexshape of surfaces comprising the object-side surfaces L1A1, L2A1, L3A1,L4A1, L5A1 and L6A1 facing to the object side A1 and the image-sidesurfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2 facing to the imageside A2, and positive or negative configuration of the refracting powerof the lens element other than the fourth lens element L4 may be similarto those in the first embodiment. Specifically, the differences ofconfiguration of surface shape may include: a periphery region L7A1P onthe object-side surface L7A1 of the seventh lens element L7 may beconcave. Please refer to FIG. 44 for the optical characteristics of eachlens elements in the optical imaging lens 10 of the present embodiment,and please refer to FIG. 62B for the values of (EFL+ALT)/D67,(T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6,AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL,(EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45),(G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL,T6/(G12+T5) and AAG/(T1+T2) of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 43(a), the offsetof the off-axis light relative to the image point may be within−0.025˜0.025 mm. As the curvature of field in the sagittal directionshown in FIG. 43(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.03˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 43(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.05˜0.06 mm. As shown in FIG. 43(d), the variation ofthe distortion aberration may be within 0˜4%. Compared with the firstembodiment, the longitudinal spherical aberration and the curvature offield in both the sagittal and tangential directions may be smallerhere.

According to the value of the aberrations, it is shown that the opticalimaging lens 10 of the present embodiment, with the HFOV as large as44.251 degrees, Fno as small as 1.600 and the system length as short as5.611 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater and the system lengthof the optical imaging lens 10 in the present embodiment may be shorter.

Reference is now made to FIGS. 46-49. FIG. 46 illustrates an examplecross-sectional view of an optical imaging lens 11 having seven lenselements of the optical imaging lens according to a eleventh exampleembodiment. FIG. 47 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 11 according to the eleventh embodiment. FIG. 48 shows an exampletable of optical data of each lens element of the optical imaging lens11 according to the eleventh example embodiment. FIG. 49 shows anexample table of aspherical data of the optical imaging lens 11according to the eleventh example embodiment.

As shown in FIG. 46, the optical imaging lens 11 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the eleventh embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, the configuration of the concave/convex shapeof the object-side surface L7A1, and the negative refracting power ofthe fourth lens element L4; but the configuration of the concave/convexshape of surfaces comprising the object-side surfaces L1A1, L2A1, L3A1,L4A1, L5A1 and L6A1 facing to the object side A1 and the image-sidesurfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2 facing to the imageside A2, and positive or negative configuration of the refracting powerof the lens element other than the fourth lens element L4 may be similarto those in the first embodiment. Specifically, the differences ofconfiguration of surface shape may include: a periphery region L7A1P onthe object-side surface L7A1 of the seventh lens element L7 may beconcave. Please refer to FIG. 48 for the optical characteristics of eachlens elements in the optical imaging lens 11 of the present embodiment,and please refer to FIG. 62B for the values of (EFL+ALT)/D67,(T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6,AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL,(EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45),(G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL,T6/(G12+T5) and AAG/(T1+T2) of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 47(a), the offsetof the off-axis light relative to the image point may be within−0.10˜0.08 mm. As the curvature of field in the sagittal direction shownin FIG. 47(b), the focus variation with regard to the three wavelengthsin the whole field may fall within −0.04˜0.04 mm. As the curvature offield in the tangential direction shown in FIG. 47(c), the focusvariation with regard to the three wavelengths in the whole field mayfall within −0.04˜0.14 mm. As shown in FIG. 47(d), the variation of thedistortion aberration may be within 0˜4.5%.

According to the value of the aberrations, it is shown that the opticalimaging lens 11 of the present embodiment, with the HFOV as large as42.802 degrees, Fno as small as 1.600 and the system length as short as5.682 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greaterin the presentembodiment.

Reference is now made to FIGS. 50-53. FIG. 50 illustrates an examplecross-sectional view of an optical imaging lens 12 having seven lenselements of the optical imaging lens according to a twelfth exampleembodiment. FIG. 51 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 12 according to the twelfth embodiment. FIG. 52 shows an exampletable of optical data of each lens element of the optical imaging lens12 according to the twelfth example embodiment. FIG. 53 shows an exampletable of aspherical data of the optical imaging lens 12 according to thetwelfth example embodiment.

As shown in FIG. 50, the optical imaging lens 12 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the twelfth embodiment and the first embodimentmay include the radius of curvature and thickness of each lens element,the value of each air gap, aspherical data, related optical parameters,such as back focal length, and the configuration of the concave/convexshape of the object-side surface L7A1; but the configuration of theconcave/convex shape of surfaces comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of each lens elemen may be similar to those in thefirst embodiment. Specifically, the differences of configuration ofsurface shape may include: a periphery region L7A1P on the object-sidesurface L7A1 of the seventh lens element L7 may be concave. Please referto FIG. 52 for the optical characteristics of each lens elements in theoptical imaging lens 12 of the present embodiment, and please refer toFIG. 62B for the values of (EFL+ALT)/D67, (T5+G56+T6)/T1,EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6, AAG/(G12+G23+G34),(T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG,(T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45), (G34+T6)/(G12+T5),TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL, T6/(G12+T5) and AAG/(T1+T2)of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 51(a), the offsetof the off-axis light relative to the image point may be within−0.025˜0.045 mm. As the curvature of field in the sagittal directionshown in FIG. 51(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.05˜0.05 mm. As thecurvature of field in the tangential direction shown in FIG. 51(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.05˜0.25 mm. As shown in FIG. 51(d), the variation ofthe distortion aberration may be within 0˜4%. Compared with the firstembodiment, the longitudinal spherical aberration may be smaller here.

According to the value of the aberrations, it is shown that the opticalimaging lens 12 of the present embodiment, with the HFOV as large as44.202 degrees, Fno as small as 1.600 and the system length as short as5.528 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater and the system lengthof the optical imaging lens 12 in the present embodiment may be shorter.

Reference is now made to FIGS. 54-57. FIG. 54 illustrates an examplecross-sectional view of an optical imaging lens 13 having seven lenselements of the optical imaging lens according to a thirteenth exampleembodiment. FIG. 55 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 13 according to the thirteenth embodiment. FIG. 56 shows an exampletable of optical data of each lens element of the optical imaging lens13 according to the thirteenth example embodiment. FIG. 57 shows anexample table of aspherical data of the optical imaging lens 13according to the thirteenth example embodiment.

As shown in FIG. 54, the optical imaging lens 13 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the thirteenth embodiment and the firstembodiment may include the radius of curvature and thickness of eachlens element, the value of each air gap, aspherical data, relatedoptical parameters, such as back focal length, the configuration of theconcave/convex shape of the object-side surface L7A1, and the negativerefracting power of the fourth lens element L4; but the configuration ofthe concave/convex shape of surfaces comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of the lens element other than the fourth lenselement L4 may be similar to those in the first embodiment.Specifically, the differences of configuration of surface shape mayinclude: a periphery region L7A1P on the object-side surface L7A1 of theseventh lens element L7 may be concave. Please refer to FIG. 56 for theoptical characteristics of each lens elements in the optical imaginglens 13 of the present embodiment, and please refer to FIG. 62B for thevalues of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4,(T3+T4)/T6, AAG/(G12+G23 +G34), (T1+T5)/G34, (G12+T6)/(G23 +G45), (T3+T4+AAG)/BFL, (EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7),ALT/(T1+G45), (G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45,EFL/BFL, T6/(G12+T5) and AAG/(T1+T2) of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 55(a), the offsetof the off-axis light relative to the image point may be within−0.035˜0.02 mm. As the curvature of field in the sagittal directionshown in FIG. 55(b), the focus variation with regard to the threewavelengths in the whole field may fall within −0.03˜0.02 mm. As thecurvature of field in the tangential direction shown in FIG. 55(c), thefocus variation with regard to the three wavelengths in the whole fieldmay fall within −0.08˜0.08 mm. As shown in FIG. 55(d), the variation ofthe distortion aberration may be within 0˜3.5%. Compared with the firstembodiment, the longitudinal spherical aberration, the curvature offield in both the sagittal and tangential directions and the distortionaberration may be smaller here.

According to the value of the aberrations, it is shown that the opticalimaging lens 13 of the present embodiment, with the HFOV as large as43.534 degrees, Fno as small as 1.600 and the system length as short as5.686 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater in the presentembodiment.

Reference is now made to FIGS. 58-61. FIG. 58 illustrates an examplecross-sectional view of an optical imaging lens 14 having seven lenselements of the optical imaging lens according to a fourteenth exampleembodiment. FIG. 59 shows example charts of a longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 14 according to the fourteenth embodiment. FIG. 60 shows an exampletable of optical data of each lens element of the optical imaging lens14 according to the fourteenth example embodiment. FIG. 61 shows anexample table of aspherical data of the optical imaging lens 14according to the fourteenth example embodiment.

As shown in FIG. 58, the optical imaging lens 14 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise an aperture stop STO, a first lens elementL1, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7.

The differences between the fourteenth embodiment and the firstembodiment may include the radius of curvature and thickness of eachlens element, the value of each air gap, aspherical data, relatedoptical parameters, such as back focal length, the configuration of theconcave/convex shape of the object-side surface L7A1, and the negativerefracting power of the fourth lens element L4; but the configuration ofthe concave/convex shape of surfaces comprising the object-side surfacesL1A1, L2A1, L3A1, L4A1, L5A1 and L6A1 facing to the object side A1 andthe image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2, L6A2 and L7A2facing to the image side A2, and positive or negative configuration ofthe refracting power of the lens element other than the fourth lenselement L4 may be similar to those in the first embodiment.Specifically, the differences of configuration of surface shape mayinclude: a periphery region L7A1P on the object-side surface L7A1 of theseventh lens element L7 may be concave. Please refer to FIG. 60 for theoptical characteristics of each lens elements in the optical imaginglens 14 of the present embodiment, and please refer to FIG. 62B for thevalues of (EFL+ALT)/D67, (T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4,(T3+T4)/T6, AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45),(T3+T4+AAG)/BFL, (EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7),ALT/(T1+G45), (G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45,EFL/BFL, T6/(G12+T5) and AAG/(T1+T2) of the present embodiment.

As the longitudinal spherical aberration shown in FIG. 59(a), the offsetof the off-axis light relative to the image point may be within−0.04˜0.02 mm. As the curvature of field in the sagittal direction shownin FIG. 59(b), the focus variation with regard to the three wavelengthsin the whole field may fall within −0.04˜0.02 mm. As the curvature offield in the tangential direction shown in FIG. 59(c), the focusvariation with regard to the three wavelengths in the whole field mayfall within −0.08˜0.14 mm. As shown in FIG. 59(d), the variation of thedistortion aberration may be within 0˜4.5%. Compared with the firstembodiment, the longitudinal spherical aberration may be smaller here.

According to the value of the aberrations, it is shown that the opticalimaging lens 14 of the present embodiment, with the HFOV as large as45.069 degrees, Fno as small as 1.600 and the system length as short as5.514 mm, may be capable of providing good imaging quality. Comparedwith the first embodiment, the HFOV may be greater and the system lengthof the optical imaging lens 14 in the present embodiment may be shorter.

Please refer to FIGS. 62A and 62B for the values of (EFL+ALT)/D67,(T5+G56+T6)/T1, EFL/(T1+G12+T2), (T3+AAG)/T4, (T3+T4)/T6,AAG/(G12+G23+G34), (T1+T5)/G34, (G12+T6)/(G23+G45), (T3+T4+AAG)/BFL,(EFL+T5)/AAG, (T4+G45+T5)/T2, TTL/(T1+T5+T6+T7), ALT/(T1+G45),(G34+T6)/(G12+T5), TL/(G34+T4+G45+G56), (T2+T7)/G45, EFL/BFL,T6/(G12+T5) and AAG/(T1+T2) of all fourteen embodiments, and the opticalimaging lens of the present disclosure may satisfy at least one of theInequality (1) and/or Inequalities (2)-(19). Further, any range of whichthe upper and lower limits defined by the values disclosed in all of theembodiments herein may be implemented in the present embodiments.

According to above illustration, the longitudinal spherical aberration,curvature of field in both the sagittal direction and tangentialdirection and distortion aberration in all embodiments may meet the userrequirement of a related product in the market. The off-axis light withregard to three different wavelengths (470 nm, 555 nm, 650 nm) may befocused around an image point and the offset of the off-axis lightrelative to the image point may be well controlled with suppression forthe longitudinal spherical aberration, curvature of field both in thesagittal direction and tangential direction and distortion aberration.The curves of different wavelengths may be close to each other, and thisrepresents that the focusing for light having different wavelengths maybe good to suppress chromatic dispersion. In summary, lens elements aredesigned and matched for achieving good imaging quality.

While various embodiments in accordance with the disclosed principlesare described above, it should be understood that they are presented byway of example only, and are not limiting. Thus, the breadth and scopeof example embodiment(s) should not be limited by any of theabove-described embodiments, but should be defined only in accordancewith the claims and their equivalents issuing from this disclosure.Furthermore, the above advantages and features are provided in describedembodiments, but shall not limit the application of such issued claimsto processes and structures accomplishing any or all of the aboveadvantages. Further, all of the numerical ranges including the maximumand minimum values and the values therebetween which are obtained fromthe combining proportion relation of the optical parameters disclosed ineach embodiment of the present disclosure are implementable.

Additionally, the section headings herein are provided for consistencywith the suggestions under 37 C.F.R. 1.77 or otherwise to provideorganizational cues. These headings shall not limit or characterize theinvention(s) set out in any claims that may issue from this disclosure.Specifically, a description of a technology in the “Background” is notto be construed as an admission that technology is prior art to anyinvention(s) in this disclosure. Furthermore, any reference in thisdisclosure to “invention” in the singular should not be used to arguethat there is only a single point of novelty in this disclosure.Multiple inventions may be set forth according to the limitations of themultiple claims issuing from this disclosure, and such claimsaccordingly define the invention(s), and their equivalents, that areprotected thereby. In all instances, the scope of such claims shall beconsidered on their own merits in light of this disclosure, but shouldnot be constrained by the headings herein.

What is claimed is:
 1. An optical imaging lens, comprising a firstelement, a second element, a third element, a fourth element, a fifthlens element, a sixth lens element and a seventh lens elementsequentially from an object side to an image side along an optical axis,each of the first, second, third, fourth, fifth, sixth and seventh lenselements having an object-side surface facing toward the object side andallowing imaging rays to pass through and an image-side surface facingtoward the image side and allowing the imaging rays to pass through,wherein: the first lens element has positive refracting power; the thirdlens element has positive refracting power and a periphery region of theobject-side surface of the third lens element is convex; an optical axisregion of the image-side surface of the fourth lens element is convex;an optical axis region of the object-side surface of the sixth lenselement is concave; an optical axis region of the object-side surface ofthe seventh lens element is concave; lens elements having refractingpower of the optical imaging lens consist of the seven lens elementsdescribed above; and an effective focal length of the optical imaginglens is represented by EFL, a sum of the thicknesses of all seven lenselements along the optical axis is represented by ALT, a distance fromthe object-side surface of the sixth lens element to the image-sidesurface of the seventh lens element along the optical axis isrepresented by D67, and the optical imaging lens satisfies theinequalities:(EFL+ALT)/D67≤4.800.
 2. The optical imaging lens according to claim 1,wherein a thickness of the fifth lens element along the optical axis isrepresented by T5, a distance from the image-side surface of the fifthlens element to the object-side surface of the sixth lens element alongthe optical axis is represented by G56, a thickness of the sixth lenselement along the optical axis is represented by T6, a thickness of thefirst lens element along the optical axis is represented by T1, and T5,G56, T6 and T1 satisfy the inequality:(T5+G56+T6)/T≤2.500.
 3. The optical imaging lens according to claim 1,wherein a thickness of the first lens element along the optical axis isrepresented by T1, a distance from the image-side surface of the firstlens element to the object-side surface of the second lens element alongthe optical axis is represented by G12, a thickness of the second lenselement along the optical axis is represented by T2, and EFL, T1, G12and T2 satisfy the inequality:EFL/(T1+G12+T2)≥4.500.
 4. The optical imaging lens according to claim 1,wherein a thickness of the third lens element along the optical axis isrepresented by T3, a sum of six air gaps from the first lens element tothe seventh lens element along the optical axis is represented by AAG, athickness of the fourth lens element along the optical axis isrepresented by T4, andT3, AAG and T4 satisfy the inequality:(T3+AAG)/T4≥5.500.
 5. The optical imaging lens according to claim 1,wherein a thickness of the third lens element along the optical axis isrepresented by T3, a thickness of the fourth lens element along theoptical axis is represented by T4, a thickness of the sixth lens elementalong the optical axis is represented by T6, and T3, T4 and T6 satisfythe inequality:(T3+T4)/T6≤1.800.
 6. The optical imaging lens according to claim 1,wherein a sum of six air gaps from the first lens element to the seventhlens element along the optical axis is represented by AAG, a distancefrom the image-side surface of the first lens element to the object-sidesurface of the second lens element along the optical axis is representedby G12, a distance from the image-side surface of the second lenselement to the object-side surface of the third lens element along theoptical axis is represented by G23, a distance from the image-sidesurface of the third lens element to the object-side surface of thefourth lens element along the optical axis is represented by G34, andAAG, G12, G23 and G34 satisfy the inequality:AAG/(G12+G23+G34)≥2.800.
 7. The optical imaging lens according to claim1, wherein a thickness of the first lens element along the optical axisis represented by T1, a thickness of the fifth lens element along theoptical axis is represented by T5, a distance from the image-sidesurface of the third lens element to the object-side surface of thefourth lens element along the optical axis is represented by G34, andT1, T5 and G34 satisfy the inequality:(T1+T5)/G34≤3.800.
 8. The optical imaging lens according to claim 1,wherein a distance from the image-side surface of the first lens elementto the object-side surface of the second lens element along the opticalaxis is represented by G12, a thickness of the sixth lens element alongthe optical axis is represented by T6, a distance from the image-sidesurface of the second lens element to the object-side surface of thethird lens element along the optical axis is represented by G23, adistance from the image-side surface of the fourth lens element to theobject-side surface of the fifth lens element along the optical axis isrepresented by G45, and G12, T6, G23 and G45 satisfy the inequality:(G12+T6)/(G23+G45)≤2.500.
 9. The optical imaging lens according to claim1, wherein a thickness of the third lens element along the optical axisis represented by T3, a thickness of the fourth lens element along theoptical axis is represented by T4, a sum of six air gaps from the firstlens element to the seventh lens element along the optical axis isrepresented by AAG, a distance from the image-side surface of theseventh lens element to an image plane along the optical axis isrepresented by BFL, and T3, T4, AAG and BFL satisfy the inequality:(T3+T4+AAG)/BFL≤4.800.
 10. The optical imaging lens according to claim8, wherein a thickness of the fifth lens element along the optical axisis represented by T5, a sum of six air gaps from the first lens elementto the seventh lens element along the optical axis is represented byAAG, and EFL, T5 and AAG satisfy the inequality:(EFL+T5)/AAG≥1.800.
 11. An optical imaging lens, comprising a firstelement, a second element, a third element, a fourth element, a fifthlens element, a sixth lens element and a seventh lens elementsequentially from an object side to an image side along an optical axis,each of the first, second, third, fourth, fifth, sixth and seventh lenselements having an object-side surface facing toward the object side andallowing imaging rays to pass through and an image-side surface facingtoward the image side and allowing the imaging rays to pass through,wherein: the third lens element has positive refracting power and aperiphery region of the object-side surface of the third lens element isconvex; a periphery region of the object-side surface of the fourth lenselement is concave and an optical axis region of the image-side surfaceof the fourth lens element is convex; an optical axis region of theobject-side surface of the sixth lens element is concave; an opticalaxis region of the object-side surface of the seventh lens element isconcave; lens elements having refracting power of the optical imaginglens consist of the seven lens elements described above; and aneffective focal length of the optical imaging lens is represented byEFL, a sum of the thicknesses of all seven lens elements along theoptical axis is represented by ALT, a distance from the object-sidesurface of the sixth lens element to the image-side surface of theseventh lens element along the optical axis is represented by D67, andthe optical imaging lens satisfies the inequalities:(EFL+ALT)/D67≤4.800.
 12. The optical imaging lens according to claim 11,wherein a thickness of the fourth lens element along the optical axis isrepresented by T4, a distance from the image-side surface of the fourthlens element to the object-side surface of the fifth lens element alongthe optical axis is represented by G45, a thickness of the fifth lenselement along the optical axis is represented by T5, a thickness of thesecond lens element along the optical axis is represented by T4, and T4,G45, T5 and T2 satisfy the inequality:(T4+G45+T5)/T2≤5.000.
 13. The optical imaging lens according to claim11, wherein a distance from the object-side surface of the first lenselement to an image plane along the optical axis is represented by TTL,a thickness of the first lens element along the optical axis isrepresented by T1, a thickness of the fifth lens element along theoptical axis is represented by T5, a thickness of the sixth lens elementalong the optical axis is represented by T6, a thickness of the seventhlens element along the optical axis is represented by T7, and TTL, T1,T5, T6 and T7 satisfy the inequality:TTL/(T1+T5+T6+T7)≤3.800.
 14. The optical imaging lens according to claim11, wherein in a thickness of the first lens element along the opticalaxis is represented by T1, a distance from the image-side surface of thefourth lens element to the object-side surface of the fifth lens elementalong the optical axis is represented by G45, and ALT, T1 and G45satisfy the inequality:ALT/(T1+G45)≤4.100.
 15. The optical imaging lens according to claim 11,wherein a distance from the image-side surface of the third lens elementto the object-side surface of the fourth lens element along the opticalaxis is represented by G34, a thickness of the sixth lens element alongthe optical axis is represented by T6, a distance from the image-sidesurface of the first lens element to the object-side surface of thesecond lens element along the optical axis is represented by G12, athickness of the fifth lens element along the optical axis isrepresented by T5, and G34, T6, G12 and T5 satisfy the inequality:(G34+T6)/(G12+T5)≥2.500.
 16. The optical imaging lens according to claim11, wherein a distance from the object-side surface of the first lenselement to the image-side surface of the seventh lens element along theoptical axis is represented by TL, a distance from the image-sidesurface of the third lens element to the object-side surface of thefourth lens element along the optical axis is represented by G34, athickness of the fourth lens element along the optical axis isrepresented by T4, a distance from the image-side surface of the fourthlens element to the object-side surface of the fifth lens element alongthe optical axis is represented by G45, a distance from the image-sidesurface of the fifth lens element to the object-side surface of thesixth lens element along the optical axis is represented by G56, and TL,G34, T4, G45 and G56 satisfy the inequality:TL/(G34+T4+G45+G56)≤5.000.
 17. The optical imaging lens according toclaim 11, wherein a thickness of the second lens element along theoptical axis is represented by T2, a thickness of the seventh lenselement along the optical axis is represented by T7, a distance from theimage-side surface of the fourth lens element to the object-side surfaceof the fifth lens element along the optical axis is represented by G45,and T2, T7 and G45 satisfy the inequality:(T2+T7)/G45≤5.000.
 18. The optical imaging lens according to claim 11,wherein a distance from the image-side surface of the seventh lenselement to an image plane along the optical axis is represented by BFL,and EFL and BFL satisfy the inequality:EFL/BFL≥4.500.
 19. The optical imaging lens according to claim 11,wherein a thickness of the sixth lens element along the optical axis isrepresented by T6, a distance from the image-side surface of the firstlens element to the object-side surface of the second lens element alongthe optical axis is represented by G12, a thickness of the first lenselement along the optical axis is represented by T5, and T6, G12 and T5satisfy the inequality:T6/(G12+T5)≥1.500.
 20. The optical imaging lens according to claim 11,wherein a thickness of the first lens element along the optical axis isrepresented by T1, a sum of six air gaps from the first lens element tothe seventh lens element along the optical axis is represented by AAG, athickness of the second lens element along the optical axis isrepresented by T2, and AAG, T1 and T2 satisfy the inequality:AAG/(T1+T2)≤4.000.